"[A] diverse and rich set of cases that explore many of the new challenges that confront U.S. national security policymakers today. Drawing on a team of established scholars and experienced practitioners, this book provides both an assessment of new threats and challenges and a case-based examination of decision-making processes... a compelling argument for the case-study approach and a fruitful blending of academic and practitioner perspectives and approaches. This book contributes significantly both to our understanding of decisions and decision-making processes as well as to our grasp of the security challenges of the 21st century. - Robert H. Dorff, Ph.D., Professor of National Security Policy and Strategy, and Chairman, Department of National Security and Strategy, U.S. Army War College."